Locked Re: Error In Sound Input #AudioIssues

Michael Ernst

Jim K9YC,I have read that book (along with a couple others) and have my station set up with extensive bonding and grounding. I have the entire station sitting on a desk that is covered with a sheet metal top, a copper pipe runs all along the back. I have a ground cable running to an outside ground rod, etc..But again, that has nothing to do with my problem. Please read the entire message thread, not just the last message or two.Thanks and 73 Mike, AE8USent from my T-Mobile 5G Device

-------- Original message --------From: Jim Brown <k9yc@...> Date: 2/15/22 15:38 (GMT-05:00) To: main@WSJTX.groups.io Subject: Re: [WSJTX] Error In Sound Input #AudioIssues On 2/15/2022 10:42 AM, Michael Black via groups.io wrote:> That sounds like RFI in the shack....notorious on USB devices and is band and power sensitive.You should find that if you turn power way down the problem goes away.Chokes on ALL wires -- USB cables, speaker wires, etc.That's a "band-aid." The proper solution is grounding and bonding. See N0AX's ARRL book on the topic, to which I contributed, and/or these slides for tutorial talks I've done at Visalia, Pacificon, and to some local clubs.http://k9yc.com/GroundingAndAudio.pdfAlso effective chokes at the feedpoint of every antenna.http://k9yc.com/2018Cookbook.pdf73, Jim K9YC

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